A certain indicator, HA, has a Ka value of 1.3Ã10â5. The protonated form of the indicator is red and the ionized form is blue. What is the pKa of the indicator?

i would say b

explanation:

but i think i would need more information than that

i'm wiling to try and you : )

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.